fix value change and height not resize

lib/json-viewer.vue

@@ -82,6 +82,11 @@ export default {
       expandCode: false
     }
   },
+  watch: {
+    value() {
+      this.onResized()
+    }
+  },
   computed: {
     jvClass () {
       return 'jv-container ' + this.theme + (this.boxed ? ' boxed' : '')
@@ -96,6 +101,7 @@ export default {
   methods: {
     onResized () {
       this.$nextTick(() => {
+        console.log(this.$refs.jsonBox.$el.clientHeight)
         if (this.$refs.jsonBox.$el.clientHeight >= 250) {
           this.expandableCode = true
         } else {